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USB: mxc: gadget: Fix bitfield for calculating maximum packet size
The max packet length bit mask used for isochronous endpoints should be 0x7FF instead of 0x8FF. 0x8FF will actually clear higher-order bits in the max packet length field. This patch applies to 2.6.34-rc6. Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -489,7 +489,7 @@ static int fsl_ep_enable(struct usb_ep *_ep,
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case USB_ENDPOINT_XFER_ISOC:
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/* Calculate transactions needed for high bandwidth iso */
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mult = (unsigned char)(1 + ((max >> 11) & 0x03));
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max = max & 0x8ff; /* bit 0~10 */
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max = max & 0x7ff; /* bit 0~10 */
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/* 3 transactions at most */
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if (mult > 3)
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goto en_done;
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